DIY. With necklace,Wireless type. Press panic button if needs help, the main unit(control panel)will go off siren and auto-dial out the phone number for help.It features panic help for 24 hours protection. Widely used for older, kid, bank, financial dept., panic thing…..etc. Easy to carry.
● Wireless frequency :433MHz OR 315MHz(other optional)
● Working voltage: 12 V. 23A
● Alarm current: I2≤15mA
● Transmitting distance : <150m(in open area), indoor :30~50m
● Operated condition: Temperature -10 -60℃,Humidity ≤95%
● Weight: 0.05 kg